Hydrogen injection system of gas turbine and flame stabilizing method

A gas turbine and injection system technology, which is applied to gas turbine devices, combustion methods, turbine/propulsion fuel delivery systems, etc., can solve the problems of oscillation, easy flashback and self-ignition, etc., to reduce emissions, reduce thermoacoustic instability, The effect of improving ignition performance
CN112228906APending Publication Date: 2021-01-15XI AN JIAOTONG UNIV
0 Cites 5 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
XI AN JIAOTONG UNIV
Publication Date
2021-01-15

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a hydrogen injection system of a gas turbine. The system comprises two hydrogen storage tanks. The hydrogen storage tanks are connected with hydrogen injectors, and hydrogen isdirectly injected into a combustion chamber according to the set flow. The two hydrogen injectors include the first hydrogen injector with a nozzle located on the lower part of the side wall of the combustion chamber, and a second hydrogen injector with a nozzle located at the bottom of the combustion chamber. The invention further provides a flame stabilizing method by using the hydrogen injection system of the gas turbine. The method comprises the steps that air and fuel are metered independently, mixed and fed into the combustion chamber, then hydrogen is metered, the hydrogen is directlyinjected into the combustion chamber from the bottom or the side face, and ignition is carried out for combustion. According to the hydrogen injection system of gas turbine and the flame stabilizing method, natural gas and hydrogen are used as fuels, and the directly injected hydrogen accounts for 1% to 5% the total amount of the fuels; by injecting a small amount of hydrogen, the lean burn limitof combustion is further expanded while flame is stabilized, the ignition performance and the combustion efficiency of the fuels are improved, the risks of tempering, self-ignition and thermo-acousticoscillation in the combustion process are reduced, and emission of pollutants such as nitric oxide is limited.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of energy and power, and in particular relates to a hydrogen injection system and a flame stabilizing method of a gas turbine. Background technique

[0002] Gas turbines are the most advanced heat-to-power conversion devices. Typical heavy-duty gas turbines for power generation use natural gas as fuel, adopt lean-burn premixed combustion, and have low NOx emissions. Hydrogen is an excellent energy carrier. Green hydrogen energy (referring to hydrogen energy produced by renewable energy) can effectively absorb fluctuating wind energy, light energy, and water energy. Converting fluctuating renewable energy into hydrogen, and then converting it into stable electricity, cooling, and heat output through combustion and fuel cells, is a feasible low-carbon and distributed comprehensive utilization of energy. Compared with traditional hydrocarbon fuels, hydrogen has the characteristics of low ignition energy, fast ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More